Our Customer Service team is available from 7:30 AM until 5:00 PM (MST).

When requesting an RMA for instrument repair or opacity filter re-certification, our Customer Service department is here to help. You can reach out to any of the contacts below and our team will be happy to help you. Please provide your instrument make, model and serial number when ordering spare parts.  ​

Return Authorization:

Please do not send any items to us without a return authorization and instructions. Items not following the procedure cannot be processed and will be rejected.

Download RMA Form: RMA Information Form

Download Certificate of Neutralization Form: Certificate of Neutralization Form

Email: [email protected] (preferred method for POs & RFQs)

Phone: 800-934-2319

Fax: 303-799-1409

Opacity Attenuator (Filter) Certification Service

From the opacity industry leader...
an easy, inexpensive and painless way to keep your opacity filters certified. 

Teledyne Monitor Labs makes it easy and inexpensive for you to keep your opacity attenuators (filters) certified. Teledyne Monitor Labs offers Opacity Filter Certification Services for all major opacity monitors. This service will help you meet the requirements of 40CFR60 Appendix B, Performance Specification 1. Our state-of-the-art facilities ensures accuracy of your neutral density opacity filters by using NIST traceable standards. 40CFR60 Appendix B, Performance Specification 1 requires opacity attenuators be calibrated semi-annually

Contact our factory at 1-800-846-6062 for details and pricing for your instrumentation.​

Repair Services

Complete Support for your instrumentation

Field Repair Services

  • Daily rate does not include parts consumed in repair Monday through Friday 8:00 to 5:00
  • Overtime and weekends are 1.5 times the daily rate
  • Holiday rates are 2 times the daily rate

Factory Repair Services

  • Daily rate does not include parts consumed in repair
  • Normal turn around for most products is 3 business days
  • Repairs are typically made in one day